diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4df0f0b..7fbf996 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -6,7 +6,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest, macos-latest ]
-        ruby: [ '3.1', '3.2' ]
+        ruby: [ '3.3', '3.4' ]
     runs-on: ${{ matrix.os }}
 
     steps:
diff --git a/.github/workflows/gem-push.yml b/.github/workflows/gem-push.yml
index fdc0965..9e6341e 100644
--- a/.github/workflows/gem-push.yml
+++ b/.github/workflows/gem-push.yml
@@ -18,7 +18,7 @@ jobs:
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: '3.2'
+        ruby-version: '3.3'
         bundler-cache: true
 
     - name: Publish to RubyGems
diff --git a/.rubocop.yml b/.rubocop.yml
index d5e423c..908b21e 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -3,6 +3,9 @@ inherit_mode:
     - Exclude
     - Include
 
+AllCops:
+  TargetRubyVersion: 3.3
+
 # Allow one line around block body (Layout/EmptyLines will still disallow two or more)
 Layout/EmptyLinesAroundBlockBody:
   Enabled: false
diff --git a/.ruby-version b/.ruby-version
index ef538c2..0ddaf4d 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.1.2
+~> 3.3
diff --git a/berkeley_library-location.gemspec b/berkeley_library-location.gemspec
index 2e55f10..07b5b02 100644
--- a/berkeley_library-location.gemspec
+++ b/berkeley_library-location.gemspec
@@ -14,7 +14,7 @@ Gem::Specification.new do |spec|
   spec.version = BerkeleyLibrary::Location::ModuleInfo::VERSION
   spec.homepage = BerkeleyLibrary::Location::ModuleInfo::HOMEPAGE
 
-  spec.required_ruby_version = '>= 3.1.0'
+  spec.required_ruby_version = '>= 3.3.0'
 
   spec.metadata['homepage_uri'] = spec.homepage
   spec.metadata['source_code_uri'] = spec.homepage
@@ -31,6 +31,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'berkeley_library-util', '~> 0.1', '>= 0.1.9'
   spec.add_dependency 'jsonpath', '~> 0.5.8'
   spec.add_dependency 'marcel', '~> 1.0.2'
+  spec.add_dependency 'nokogiri', '>= 1.19.1'
   spec.add_dependency 'rest-client', '~> 2.1'
   spec.add_dependency 'rubyXL', '~> 3.4'
 
@@ -40,7 +41,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'dotenv', '~> 2.7'
   spec.add_development_dependency 'rake', '~> 13.0'
   spec.add_development_dependency 'rspec', '~> 3.10'
-  spec.add_development_dependency 'rubocop', '= 1.39'
+  spec.add_development_dependency 'rubocop', '~> 1.75'
   spec.add_development_dependency 'rubocop-rake', '= 0.6.0'
   spec.add_development_dependency 'rubocop-rspec', '= 2.4.0'
   spec.add_development_dependency 'ruby-prof', '~> 1.7.1'
diff --git a/lib/berkeley_library/location/xlsx_reader.rb b/lib/berkeley_library/location/xlsx_reader.rb
index 67b4ac3..dd87c7c 100644
--- a/lib/berkeley_library/location/xlsx_reader.rb
+++ b/lib/berkeley_library/location/xlsx_reader.rb
@@ -19,6 +19,8 @@ def each_oclc_number
         return to_enum(:each_oclc_number) unless block_given?
 
         ss.each_value(oclc_col_index, include_header: false) do |v|
+          # convert to integer if oclc number is a float in the spreadsheet"
+          v = v.to_i if v.is_a?(Float)
           next if (v_str = v.to_s).strip == ''
 
           yield v_str
diff --git a/spec/.rubocop.yml b/spec/.rubocop.yml
index cc8f998..da85d02 100644
--- a/spec/.rubocop.yml
+++ b/spec/.rubocop.yml
@@ -123,5 +123,5 @@ RSpec/VerifiedDoubles:
 RSpec/IdenticalEqualityAssertion: # new in 2.4
   Enabled: true
 
-RSpec/Rails/AvoidSetupHook: # new in 2.4
+RSpecRails/AvoidSetupHook:
   Enabled: true
diff --git a/spec/berkeley_library/location/xlsx_reader_spec.rb b/spec/berkeley_library/location/xlsx_reader_spec.rb
index a8d5aa0..038e8f7 100644
--- a/spec/berkeley_library/location/xlsx_reader_spec.rb
+++ b/spec/berkeley_library/location/xlsx_reader_spec.rb
@@ -73,12 +73,40 @@ module Location
             .to yield_successive_args(*oclc_numbers_expected)
         end
 
+        # Added this since oclc floats in oclc-numbers-float.xlsx weren't being read
+        # in as floats at runtime.
+        it 'processes OCLC numbers converted to floats from the base spreadsheet' do
+          source_xlsx_path = 'spec/data/excel/oclc-numbers.xlsx'
+          source_oclc_numbers = XLSXReader.new(source_xlsx_path).each_oclc_number.to_a
+
+          Dir.mktmpdir(File.basename(__FILE__)) do |tmpdir|
+            xlsx_path = File.join(tmpdir, 'oclc-numbers-from-source-as-floats.xlsx')
+
+            ss = BerkeleyLibrary::Util::XLSX::Spreadsheet.new
+            c_index = ss.ensure_column!(BerkeleyLibrary::Location::Constants::OCLC_COL_HEADER)
+            source_oclc_numbers.each_with_index do |oclc_num, i|
+              r_index = 1 + i # skip header row
+              ss.set_value_at(r_index, c_index, oclc_num.to_f)
+            end
+            ss.save_as(xlsx_path)
+
+            reader = XLSXReader.new(xlsx_path)
+            expect(reader.each_oclc_number.to_a).to eq(source_oclc_numbers)
+          end
+        end
+
         it 'finds OCLC numbers as strings' do
           reader = XLSXReader.new('spec/data/excel/oclc-numbers-text.xlsx')
           expect { |b| reader.each_oclc_number(&b) }
             .to yield_successive_args(*oclc_numbers_expected)
         end
 
+        it 'finds OCLC numbers when column is formatted as Excel number' do
+          reader = XLSXReader.new('spec/data/excel/oclc-numbers-float.xlsx')
+          expect { |b| reader.each_oclc_number(&b) }
+            .to yield_successive_args(*oclc_numbers_expected)
+        end
+
         it 'skips blank cells' do
           reader = XLSXReader.new('spec/data/excel/oclc-numbers-sparse.xlsx')
           expect { |b| reader.each_oclc_number(&b) }
diff --git a/spec/data/excel/oclc-numbers-float.xlsx b/spec/data/excel/oclc-numbers-float.xlsx
new file mode 100644
index 0000000..ed24d8d
Binary files /dev/null and b/spec/data/excel/oclc-numbers-float.xlsx differ